TDA7561H

Overview

The TDA7561H is a quad bridge-type car radio amplifier utilizing Multipower BCD technology and DMOS output stages. It delivers high output power with low distortion, rated at 4 x 25 W into 4 Ω loads at 14.4 V (1 kHz, 10% THD) and up to 4 x 35 W per EIAJ standards. The device supports 4 x 60 W maximum output into 2 Ω loads. It features full I²C bus control for configuration, digital diagnostics, and protection functions including DC offset detection, short circuit protection, and clipping detection.

Feature Summary

• Integrates DMOS power output stage for high efficiency and low distortion in automotive audio applications
• Provides comprehensive I²C bus control for gain selection, standby modes, and independent channel muting
• Includes built-in digital diagnostics and fault protection mechanisms such as DC offset and short circuit detection

Applications

• Car radio amplification systems
• Automotive infotainment audio processing
• Vehicle cabin sound enhancement

Procurement Notes

Verify the exact suffix against official STMicroelectronics documentation to confirm package type and temperature range specifications. Ensure compatibility with existing I²C bus architectures and supply voltage requirements before integration. Cross-reference datasheet revisions to validate pinout consistency and diagnostic feature availability for the specific manufacturing batch.

Selection Notes

Select this component for designs requiring integrated quad-channel amplification with minimal external components. The fixed internal gain options simplify circuit design by eliminating external compensation networks. Verify that the system can support the required 14.4 V supply and that the I²C interface aligns with the host microcontroller's capabilities for proper configuration and monitoring.

Part Context

This part belongs to STMicroelectronics' family of automotive audio power amplifiers designed for vehicle entertainment systems. It utilizes BCD technology to integrate power and logic functions on a single chip. The Flexiwatt25 package provides thermal efficiency suitable for confined automotive environments while maintaining robust performance under varying load conditions.

Replacement Considerations

Consult official substitution lists for compatible alternatives. Verify electrical parameters and pinout compatibility if considering cross-brand replacements.